<script>
n = '838102050'        // Set 'n' to a string
document.write('n = ' + n + ', and is a ' + typeof n + '<br />')

n = 12345 * 67890;     // Set 'n' to a number
document.write('n = ' + n + ', and is a ' + typeof n + '<br />')

n += ' plus some text' // Change 'n' from a number to a string
document.write('n = ' + n + ', and is a ' + typeof n + '<br />')
</script>